2022 1z1-819 Premium Files Test pdf - Free Dumps Collection
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Who should take the Java SE 11 Developer Exam Number: 1Z0-819
This exam helps students to understand the basic relational database concepts. Moreover, it will teach the students about data modeling concepts, building Entity Relationship Diagrams (ERDs), and mapping ERDs. Moreover, with this project-based learning techniques, students will be able to create and work with projects to design, implement, and demonstrate a database solution for a business or organization.
NEW QUESTION 129
Given:
Which two are correct? (Choose two.)
- A. Option A
- B. Option B
- C. Option D
- D. Option C
Answer: C,D
NEW QUESTION 130
Given:
var fruits = List.of("apple", "orange", "banana", "lemon");
You want to examine the first element that contains the character n. Which statement will accomplish this?
- A. Optional<String> result = fruits.stream().anyMatch(f -> f.contains("n"));
- B. fruits.stream().filter(f -> f.contains("n")).forEachOrdered(System.out::print);
- C. Optional<String> result = fruits.stream().filter(f -> f.contains ("n")).findFirst ();
- D. String result = fruits.stream().filter(f -> f.contains("n")).findAny();
Answer: B
Explanation:
NEW QUESTION 131
Given:
and
What is the result?
- A. The compilation fails.
- B. A ClassCastException is thrown at run time.
- C. 1
1
1 - D. 1
Null
null - E. A NullPointerException is thrown at run time.
Answer: A
Explanation:
NEW QUESTION 132
Given:
What is the result?
- A. The compilation fails at line 8.
- B. The compilation fails at line 9.
- C. The compilation fails at line 2.
- D. Hello World
Answer: D
Explanation:
NEW QUESTION 133
Given:
Which two methods facilitate valid ways to read instance fields? (Choose two.)
- A. getCCount
- B. getTCount
- C. getGCount
- D. getTotalCount
- E. getACount
Answer: A,D
NEW QUESTION 134
Given:
executed using command:
java Hello "Hello World" Hello World
What is the output?
- A. Hello WorldHelloWorld
- B. HelloHello WorldHelloWorld
- C. Hello World Hello World
- D. Hello WorldHello World
- E. An exception is thrown at runtime.
Answer: C
NEW QUESTION 135
Given:
What is the expected result of javac?
- A. javac fails to compile the class and prints the error message, Error: Could not find or load main class Mycar.class
- B. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: expected import java.lang
- C. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: package java does not exist
- D. javac compiles Mycar.java without errors or warnings.
Answer: D
NEW QUESTION 136
Which code fragment does a service use to load the service provider with a Print interface?
- A. private Print print = com.service.Provider.getInstance();
- B. private Print print = new com.service.Provider.PrintImpl();
- C. private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);
- D. private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();
Answer: C
NEW QUESTION 137
Given:
It is required that if p instanceof Pair then p.isValid() returns true.
Which is the smallest set of visibility changes to insure this requirement is met?
- A. isValid must be public.
- B. left and right must be private.
- C. setLeft and setRight must be protected.
- D. left, right, setLeft, and setRight must be private.
Answer: B
NEW QUESTION 138
Given:
What is the result?
- A. 3 3 3 3
- B. 5 5 3 3
- C. 3 5 3 5
- D. 3 5 3 3
Answer: D
Explanation:
NEW QUESTION 139
Given:
What is the result?
- A. abd
- B. adf
- C. abdf
- D. abcd
- E. The compilation fails.
Answer: D
NEW QUESTION 140
Given the code fragment:
Path source = Paths.get("/repo/a/a.txt");
Path destination = Paths.get("/repo");
Files.move(source, destination); // line 1
Files.delete (source); // line 2
Assuming the source file and destination folder exist, what Is the result?
- A. A java.nio.file.NoSuchFileException is thrown on line 2.
- B. A copy of /repo/a/a.txt is moved to the /repo directory and /repo/a/a.txt is deleted.
- C. a.txt is renamed repo.
- D. A java.nio.file.FileAlreadyExistsException is thrown on line 1.
Answer: B
NEW QUESTION 141
Given:
What code must you insert on Line 1 to enable the code to print Hello world?
- A. Hello myH = new Hello();
Hello.Greeting myG = myH.new Hello.Greeting();
myG.sayHi(); - B. Hello myH = new Hello();
Hello.Greeting myG = myH.new Greeting();
myG.sayHi(); - C. Hello myH = new Hello(); Greeting myG = new Greeting(); myG.sayHi ();
- D. Hello.Greeting myG = new Hello.Greeting() myG.sayHi();
Answer: B
NEW QUESTION 142
Examine these module declarations:
Which two statements are correct? (Choose two.)
- A. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
- B. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
- C. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the
- D. The ServiceProvider module should export the com.myimpl package.
- E. The Consumer module should require the ServiceProvider module.
Answer: B,E
Explanation:
com.example.api API.
NEW QUESTION 143
Given the code fragment:
What is the result?
- A. True
- B. A java.lang, UnsupportedOperationException is thrown.
- C. A java.lang.NullPointerException is thrown.
- D. False
Answer: B
NEW QUESTION 144
Given:
Which two lines inserted in line 1 will allow this code to compile? (Choose two.)
- A. void walk(){}
- B. abstract void walk();
- C. public abstract void walk();
- D. protected void walk(){}
- E. private void walk(){}
Answer: C,D
NEW QUESTION 145
Given the code fragment:
What is the result?
- A. 0
- B. It prints 1 in the infinite loop.
- C. 1
- D. 01
- E. The program prints nothing.
Answer: E
NEW QUESTION 146
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